Scientists report/communicate their results with others in order to share what they have learned and to allow veification of their results.
Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.
Answer:
The correct answers: B, C and D.
Explanation:
- X-ray diffraction studies of the DNA reveal the following:
- The DNA is comprised of two strands which are coiled around each other in the shape of a helix.
- The backbone of the DNA is made up of phosphate and deoxyribose groups, alternately, which are exposed towards the outside of the helix.
- The nitrogenous bases which form the hydrogen bonds that link the two helices are directed towards the centre of the helix.
When new emperical evidence is discovered
